Budil, D. E. and Earle, K. A.: Sample Resonators for Quasioptical EPR, in: Very High Frequency (VHF) ESR/EPR. Biological Magnetic Resonance, edited by: Grinberg, O. Y. and Berliner, L. J., Springer, Boston, MA, https://doi.org/10.1007/978-1-4757-4379-1_11, 2004.
Forrer, J., García-Rubio, I., Schuhmam, R., Tschaggelar, R., and Harmer, J.: Cryogenic Q-band (35 GHz) probehead featuring large excitation microwave fields for pulse and continuous wave electron paramagnetic resonance spectroscopy: Performance and applications, J. Magn. Reson., 190, 280–291, https://doi.org/10.1016/j.jmr.2007.11.009, 2008.
Harrysson Rodrigues, I., Niepce, D., Pourkabirian, A., Moschetti, G., Schleeh, J., Bauch, T., and Grahn, J.: On the angular dependence of InP high electron mobility transistors for cryogenic low noise amplifiers in a magnetic field, AIP Adv., 9, 085004, https://doi.org/10.1063/1.5107493, 2019.
Hyde, J. S. and Froncisz, W.: Loop gap resonators, in: Advanced EPR: Applications in biology and biochemistry, edited by: Hoff, A. J., Elsevier, Amsterdam, 277–305, ISBN 0-444-88050-X, 1989.
Hyde, J. S. and Mett, R. R.: EPR uniform field signal enhancement by dielectric tubes in cavities, Appl. Magn. Reson., 48, 1185–1204, https://doi.org/10.1007/s00723-017-0935-4, 2017.
Hyde, J. S., Chien, J. C. W., and Freed, J. H.: Electron–electron double resonance of free radicals in solution, J. Chem. Phys., 48, 4211–4226, https://doi.org/10.1063/1.1669760, 1968.
Jbara, M., Zgadzai, O., Harneit, W., and Blank, A.: Cryogenic W-band Electron Spin Resonance Probehead with an Integral Cryogenic Low Noise Amplifier, Appl. Magn. Reson., 56, 265–284, https://doi.org/10.1007/s00723-024-01732-1, 2025.
Kalendra, V., Turcak, J., Banys, J., Morton, J. L., and Šimenas, M.: X- and Q-band EPR with cryogenic amplifiers independent of sample temperature, J. Magn. Reson., 346, 107356, https://doi.org/10.1016/j.jmr.2022.107356, 2023.
Kittell, A. W., Camenisch, T. G., Ratke, J. J., Sidabras, J. W., and Hyde, J. S.: Detection of undistorted continuous wave (CW) electron paramagnetic resonance (EPR) spectra with non-adiabatic sweep (NARS) of the magnetic field, J. Magn. Reson., 211, 228–233, https://doi.org/10.1016/j.jmr.2011.06.004, 2011.
Mailer, C., Thomann, H., Robinson, B. H., and Dalton, L. R.: Crossed TM
110 bimodal cavity for measurement of dispersion electron paramagnetic resonance and saturation transfer electron paramagnetic resonance signals for biological materials, Rev. Sci. Instrum., 51, 1714–1721, https://doi.org/10.1063/1.1136162, 1980.
Milikisiyants, S., Nevzorov, A. A., and Smirnov, A. I.: Photonic band-gap resonators for high-field/high frequency EPR of microliter-volume liquid aqueous samples, J. Magn. Reson., 296, 152–164, https://doi.org/10.1016/j.jmr.2018.09.006, 2018.
Neugebauer, P. and Barra, A-M.: New Cavity Design for Broad-Band Quasi-Optical HF-EPR Spectroscopy, Appl. Magn. Reson., 37, 833–843, https://doi.org/10.1007/s00723-009-0092-5, 2010.
Niklas, J. and Poluektov, O. G.: Charge transfer processes in OPV materials as revealed by EPR spectroscopy, Adv. Energy Mater., 7, 1602226, https://doi.org/10.1002/aenm.201602226, 2017.
Piasecki, W., Froncisz, W., and Hyde, J. S.: Bimodal loop-gap resonator, Rev. Sci. Instrum., 67, 1896–1904, https://doi.org/10.1063/1.1147001, 1996.
Pfenninger, S., Froncisz, W., and Hyde, J. S.: Noise analysis of epr spectrometers with cryogenic microwave preamplifiers, J. Magn. Reson. Ser. A, 113, 32–39, https://doi.org/10.1006/jmra.1995.1052, 1995.
Prisner, T. and Dinse, K. P.: ESR with stochastic excitation, J. Magn. Reson., 84, 296–308, https://doi.org/10.1016/0022-2364(89)90373-9, 1989.
Raitsimring, A., Astashkin, A., Enemark, J. H., Blank, A., Twig, Y., Song, Y., and Meade, T. J.: Dielectric resonator for K-band pulsed EPR measurements at cryogenic temperatures: probehead construction and applications, Appl. Magn. Reson., 42, 441–452, https://doi.org/10.1007/s00723-012-0313-1, 2012.
Reijerse, E., Lendzian, F., Isaacson, R., and Lubitz, W.: A tunable general purpose Q-band resonator for CW and pulse EPR/ENDOW experiments with large sample access and optical excitation, J. Magn. Reson. 214, 237–243, https://doi.org/10.1016/j.jmr.2011.11.011, 2012.
Rinard, G. A. and Eaton, G.R.: Loop-Gap Resonators, in: Biomedical EPR, Part B: Methodology, Instrumentation, and Dynamics. Biological Magnetic Resonance, edited by: Eaton, S. R., Eaton, G. R., Berliner, L. J., 24/B, 19-52, Springer, Boston, MA, https://doi.org/10.1007/0-306-48533-8_2, 2005.
Rinard, G. A., Quine, R. W., Ghim, B. T., Eaton, S. S., and Eaton, G. R.: Easily tunable crossed-loop (bimodal) EPR resonator, J. Magn. Reson. Ser. A, 122, 50–57, https://doi.org/10.1006/JMRA.1996.0173, 1996.
Rinard, G. A., Quine, R. W., Song, R., Eaton, G. R., and Eaton, S. S.: Absolute EPR spin echo and noise intensities, J. Magn. Reson., 140, 69–83, https://doi.org/10.1006/jmre.1999.1823, 1999.
Rokeakh, A. I. and Artyomov, M. Y.: Low-Frequency NARS (LF NARS) by the use of a superheterodyne EPR spectrometer, J. Magn. Reson., 349, 107402, https://doi.org/10.1016/j.jmr.2023.107402, 2023.
Šimėnas, M., O'Sullivan, J., Zollitsch, C.W., Kennedy, O., Seif-Eddine, M., Ritsch, I., Hülsmann, M., Qi. M., Godt, A., Roessler, M. M., Jeschke, G., and Morton, J. L.: A sensitivity leap for X-band EPR using a probehead wit
h a cryogenic preamplifier, J. Magn. Reson. 322, 106876, https://doi.org/10.1016/j.jmr.2020.106876, 2021.
Simovic, B., Studerus, P., Gustavsson, S., Leturcq, R., Ensslin, K., Schumann, R., Forrer, J., and Schweiger, A.: Design of Q-Band loop-gap resonators at frequencies 34-36 GHz for single electron spin spectroscopy in semiconductor nanostructures, Rev. Sci. Instrum., 77, https://doi.org/10.1063/1.2206776, 2006.
Stoner, J. W., Szymanski, D., Eaton, S. S., Quine, R. W., Rinard, G. A., and Eaton, G. R.: Direct-detected rapid-scan EPR at 250 MHz, J. Magn. Reson., 170, 127–135, https://doi.org/10.1016/j.jmr.2004.06.008, 2004.
Tait, C. E., Neuhaus, P., Peeks, M. D., Anderson, H. L., and Timmel, C.: Transient EPR Reveals Triplet State Delocalization in a Series of Cyclic and Linear
π-Conjugated Porphyrin Oligomers, J. Am. Chem. Soc., 137, 8284–8293, https://doi.org/10.1021/jacs.5b04511, 2015.
Tesi, L., Bloos, D., Hrtoň, M., Beneš, A., Hentschel, M., Kern, M., Leavesley, A., Hillenbrand, R., Křápek, V., Šikola, T., and van Slageren, J.: Plasmonic Metasurface Resonators to Enhance Terahertz Magnetic Fields for High-Frequency Electron Paramagnetic Resonance, Small Methods, 5, 2100376, https://doi.org/10.1002/smtd.202100376, 2021.
Tipikin, D. S., Earle, K. A., and Freed, J. H.: Variable Coupling Scheme for High-Frequency Electron Spin Resonance Resonators Using Asymmetric Meshes, Appl. Magn. Reson., 37, 819–832, https://doi.org/10.1007/s00723-009-0088-1, 2010.
Tkach, I., Sicoli, G., Höbartner, C., and Bennati, M.: A dual-mode microwave resonator for double electron–electron spin resonance spectroscopy at W-band microwave frequencies, J. Magn. Reson., 341–346, https://doi.org/10.1016/j.jmr.2011.01.012, 2011.
Trenkler, P. A. S., Endeward, B., Sigurdsson, S. T., and Prisner, T. F.: Optimized shaped pulses for a 2D single-frequency technique for refocusing (SIFTER), Magn. Reson., 6, 281–315, https://doi.org/10.5194/mr-6-281-2025, 2025.
Tschaggelar, R., Breitgoff, F. D., Oberhänsli, O., Mian, Qi., Godt A., and Jeschke, G.: High-Bandwidth Q-Band EPR Resonators, Appl. Magn. Reson., 48, 1273–1300, https://doi.org/10.1007/s00723-017-0956-z, 2017.
Twig, Y., Dikarov, E., and Blank, A.: Ultra miniature resonators for electron spin resonance: Sensitivity analysis, design and construction methods, and potential applications, Mol. Phys., 111, 2674–2682, https://doi.org/10.1080/00268976.2012.762463, 2013.
